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Operating Instructions ACU
12/16
11.4.2
Division Marks, Speed Sensor 1
The number of increments of the connected speed sensor can be adjusted via parameter
Division
Marks Speed Sensor 1
491
. Select the division marks of the speed sensor according to the speed
range of the application.
The maximum number of division marks S
max
is defined by the frequency limit of f
max
=150 kHz of the
digital inputs S5IND (track A) and S4IND (track B).
max
n
60
max
f
max
S
for example:
6000
1500
60s
Hz
150000
max
S
f
max
n
max
= 150000 Hz
= max. speed of the motor in RPM
To guarantee true running of the drive, an encoder signal must be evaluated at least every 2 ms
(signal frequency f = 500 Hz). The minimum number of division marks S
min
of the incremental
encoder for a required minimum speed n
min
can be calculated from this requirement.
min
n
A
60
min
f
min
S
for example:
1500
10
2
s
60
Hz
500
min
S
n
min
A
= min. speed of the motor in RPM
= evaluation (1,
2, 4)
Parameter
Setting
No.
Description
Min.
Max.
Factory setting
491 Division Marks, Speed Sensor 1
1
8192
1024
11.4.3
Gear factor speed sensor 1
Setting of parameters
EC1 Gear Factor Numerator
511
and
EC1 Gear Factor Denominator
512
is
required if a gear is installed between the speed sensor and the motor shaft. The parameters define
the mechanical transmission ratio between the speed sensor and the motor side. The parameters
must be set such that the gear factor numerator corresponds to the motor rotations and the gear
factor denominator corresponds to the sensor rotations.
Parameter
Setting
No.
Description
Min.
Max.
Factory setting
511 EC1 Gear Factor Numerator
-300.00
300.00
1.00
512 EC1 Gear Factor Denominator
0.01
300.00
1.00
Example:
The motor shaft turns twice while the load shaft rotates once (16/8).
512
511
axis
load
of
s
Revolution
axis
motor
of
s
Revolution
r
Denominato
Factor
Gear
1
EC
Numerator
Factor
Gear
1
EC
Load
Encoder
Gear
Motor
8 teeth
16 teeth
Содержание active cube 201
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